Im having a problem where my cut height is higher than what I have it set at. i am running a crossfire xr with a prime weld cut 60 with raw voltage gotten from inside the machine. my torch height is set at .06 and when I test it by pausing it mid cut, I’m finding around .12 with a feeler gauge. I tried to set the cut height to .03 in fusion and that brought my torch down to about .08.
I am using smart voltage and my live voltage hangs around 107v when cutting. let me know any questions or potential solutions.
Thanks,
Sam
Post your G Code (can open it in notepad).
Assuming you’re not fat fingering anything, ensure your Z axis dip switches are correct on the driver. You can do this by just removing the cover on the large control box ensuring only one dip switch is in the down position (I’ll have to check later which one), or a quick one by jogging the Z axis in small increments, and physically measuring that the distance traveled is correct.
It’s quite normal to have a different programmed cut height in order to achieve the correct physical cut height.
For me, a .02" programmed cut height gives me .06" physical cut height. When I used a different setup/plasma cutter, my programmed cut height used to be .04" the entire time for a cut height of .06".
If you’re using Fusion, set the spring back value to zero or a negative number to get the correct measured cut height.
If you look the the code, the post processor adds .02" as a backlash compensation, in addition to whatever value that you put into the spring back field ( .02" if you follow the Langmuir instructions).
There really isn’t any backlash with the way the IHS operates, so it’s just adding height to the pierce and cut heights.
Any material over 14 ga is not going to spring back, so you’re also adding more to the pierce and cut heights by putting a value in there
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here is my Gcode
(v1.6-af)
G90 G94
G17
G20
H0
(2D Profile2)
G0 X0.04 Y-5.04
G92 Z0.
G38.2 Z-5. F100.
G38.4 Z0.5 F20.
G92 Z0.
G0 Z0.04 (IHS Springback + Backlash)
G92 Z0.
G0 Z0.18 (Pierce Height)
M3
G4 P1.
G0 Z0.06 (Cut Height)
H1
G1 Y-0.04 F100.
H0
M5
G0 Z1.
M30
(PS100)
I cut a lot of 16ga. should I set spring back to 0 for everything or sould i have a little for things like 16ga?
I would set it to zero and take a measurement to see what the actual height cut height is.
The torch isn’t that heavy and I haven’t noticed much flex in full 16ga sheets. The only time I see any spring back is on sheets that have already been cut and are bent slightly.
2 Likes
Like @ds690 mentioned, springback does add some cut height but you actually made it even higher yourself since default value is .02", and default value for pierce height is .15".